I'd run it .0005 off before I'd backwoods it. It will cost you oil pressure but you can likely make it up with a thicker viscosity. If you plan to beat the snot out of it, it may not be the end of the world to build it a hair loose.
Brought back a funny memory. I once knew a guy that built a small block chevy and needed to tighten things up a bit. He used a hammer and a hard surface to "adjust" the bearing shells. Needless to say, it ran for a while. A short while.
